Rugged terrain

Since the barrier's completion in October, authorities say, illegal activity has declined considerably, and there have been few signs of people trying to cut or breach the fence.

Since the barrier's completion in October, authorities say, illegal activity has declined considerably, and there have been few signs of people trying to cut or breach the fence. (Don Bartletti / Los Angeles Times)

Since the barrier's completion in October, authorities say, illegal activity has declined considerably, and there have been few signs of people trying to cut or breach the fence.